Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 579, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2019.123633
Keywords
Clustering; Mesostructured liquid phase; Glycine; Scattering
Categories
Funding
- EPSRC [EP/P0068X/1]
- Synchrotron SOLEIL
- EPSRC [EP/P00668X/1, EP/P006965/1] Funding Source: UKRI
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In this work DLS, NTA, SAXS and NMR were used to investigate populations, size distributions and structure of clusters in undersaturated aqueous solutions of glycine. Molecular and colloidal scale (mesoscale) clusters with radii around 0.3-0.5 nm and 100-150 nm, respectively, were observed using complementary experimental techniques. Molecular clusters are consistent with hydrated glycine dimers present in equilibrium with glycine monomers in aqueous solutions. Mesoscale clusters previously observed in supersaturated glycine solutions appear to be indefinitely stable, in mutual equilibrium within mesostructured undersaturated solutions across all glycine concentrations investigated here, down to as low as 1 mg/g of water.
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